Flue gas treatment method and device based on energy medium deployment

Abstract

The invention provides a flue gas treatment method and device based on energy medium deployment, and relates to the technical field of flue gas treatment. The method comprises: performing first heat exchange between the flue gas to be treated and the first working medium to obtain first flue gas; performing wet desulfurization on the first flue gas to obtain second flue gas; performing second heatexchange between the second flue gas and the second working medium to obtain third flue gas; and discharging the third flue gas after the third flue gas is heated, with the first working medium andthe second working medium having same composition, and the first working medium being obtained by heating the second working medium. Through the method, the flue gas desulfurization efficiency can beincreased, and the purpose of dehumidification and white smoke removal of the flue gas while performing desulfurization by the wet desulfurization process can be achieved.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a flue gas treatment method and device based on energy quality deployment. Background technique [0002] At present, the flue gas desulfurization process used in China is usually wet desulfurization, especially after the ultra-clean emission transformation of boilers in thermal power enterprises, almost all wet desulfurization processes have been adopted. However, the moisture content of the flue gas after wet desulfurization is relatively high (13-15%), and the temperature is low (45-55°C). A large amount of water vapor condenses into small droplets when condensed. After the refraction and heat dissipation of light, the wet smoke appears white or gray, which is called "wet smoke plume" (commonly known as "big white smoke"), causing smog and affecting vision. , will also cause dew point corrosion, and at the same time may provide a photochemical reaction environment f...

AI Technical Summary

Problems solved by technology

However, the moisture content of the flue gas after wet desulfurization is relatively high (13-15%), and the temperature is low (45-55°C). A large amount of water vapor condenses into small droplets when condensed. After the refraction and heat dissipation of light, the wet smoke appears white or gray, which is called "wet smoke plume" (commonly known as "big white smoke"), causing smog and affecting vision. , will also cause dew point corrosion, and at the same time may provide a photochemical reaction environment for nitrogen oxides, sulfur dioxide and water molecules, thereby affecting the quality of the air environment

Images